A FRACTURE-ENERGY-BASED ELASTO-SOFTENING-PLASTIC CONSTITUTIVE MODEL FOR JOINTS OF GEOMATERIALS

Applied Mathematics and Mechanics (English Edition) ›› 2002, Vol. 23 ›› Issue (9): 1097-1104.

A FRACTURE-ENERGY-BASED ELASTO-SOFTENING-PLASTIC CONSTITUTIVE MODEL FOR JOINTS OF GEOMATERIALS

沈新普¹, 沈国晓²

1. Department of Mechanics, Northeastern University, Shenyang 110004, PR China;
2. Department of Applied Sciences, Taiyuan Institute of Heavy Machine, Taiyuan 030024, P.R.China

收稿日期:2001-08-13 修回日期:2002-06-18 出版日期:2002-09-18 发布日期:2002-09-18
通讯作者: YANG Gui-tong
基金资助:
Foundation item:the Natural Science Foundation of Liaoning Povince(070091)

A FRACTURE-ENERGY-BASED ELASTO-SOFTENING-PLASTIC CONSTITUTIVE MODEL FOR JOINTS OF GEOMATERIALS

SHEN Xin-pu¹, SHEN Guo-xiao²

1. Department of Mechanics, Northeastern University, Shenyang 110004, PR China;
2. Department of Applied Sciences, Taiyuan Institute of Heavy Machine, Taiyuan 030024, P.R.China

Received:2001-08-13 Revised:2002-06-18 Online:2002-09-18 Published:2002-09-18
Supported by:
Foundation item:the Natural Science Foundation of Liaoning Povince(070091)

摘要/Abstract

摘要： On the basis of plasticity and fracture mechanics for quasi-brittle materials, this article presented a constitutive model for gradual softening behavior of joints of geomateri-als. Corresponding numerical tests are carried out at the local level. Characteristics of the model proposed are 1) plastic softening and dilatancy behavior are directly related to the fracture process of joint, and much less material and model parameters are required compared with those proposed by references; 2) the process of decohesion coupled with friction-al sliding at both micro-scale and macro-scale is described.

Abstract: On the basis of plasticity and fracture mechanics for quasi-brittle materials, this article presented a constitutive model for gradual softening behavior of joints of geomateri-als. Corresponding numerical tests are carried out at the local level. Characteristics of the model proposed are 1) plastic softening and dilatancy behavior are directly related to the fracture process of joint, and much less material and model parameters are required compared with those proposed by references; 2) the process of decohesion coupled with friction-al sliding at both micro-scale and macro-scale is described.

中图分类号:

O342

沈新普;沈国晓. A FRACTURE-ENERGY-BASED ELASTO-SOFTENING-PLASTIC CONSTITUTIVE MODEL FOR JOINTS OF GEOMATERIALS[J]. Applied Mathematics and Mechanics (English Edition), 2002, 23(9): 1097-1104.

SHEN Xin-pu;SHEN Guo-xiao. A FRACTURE-ENERGY-BASED ELASTO-SOFTENING-PLASTIC CONSTITUTIVE MODEL FOR JOINTS OF GEOMATERIALS[J]. Applied Mathematics and Mechanics (English Edition), 2002, 23(9): 1097-1104.

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A FRACTURE-ENERGY-BASED ELASTO-SOFTENING-PLASTIC CONSTITUTIVE MODEL FOR JOINTS OF GEOMATERIALS

A FRACTURE-ENERGY-BASED ELASTO-SOFTENING-PLASTIC CONSTITUTIVE MODEL FOR JOINTS OF GEOMATERIALS

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